On Fri, 25 Sep 2009 at 18:04:03, Bernard Burton
wrote in uk.sci.weather :

Further to the recent thread about measuring relative humidity, it may be of
interest that a comparison between screen humidity measured using a wet/dry
psychrometer in the screen, and that simultaneously measured on an aspirated
Vaisala capacitive probe, was undertaken here early in 2007. I have put 4
graphs and a brief explanation of some results from this trial at:

http://www.woksat.info/wwp/RH-comparison.pdf

Interesting - thanks.
--
Paul Hyett, Cheltenham (change 'invalid83261' to 'blueyonder' to email me)